--- title: Ruff v0.1.0 | daily.dev description: Ruff v0.1.0 has been released, marking a major stabilization milestone for the fast Python linter written in Rust. Key changes include a new preview mode for... canonical: https://daily.dev/posts/ruff-v0-1-0-cvyhpul6r twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Ruff v0.1.0 | daily.dev og:description: Ruff v0.1.0 has been released, marking a major stabilization milestone for the fast Python linter written in Rust. Key changes include a new preview mode for... og:url: https://daily.dev/posts/ruff-v0-1-0-cvyhpul6r og:image: https://api.daily.dev/og/posts/cvYhPul6r.png og:image:alt: Ruff v0.1.0 og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Ruff v0.1.0 **[Astral](https://daily.dev/sources/astral-sh)** · 6 min read · 0 upvotes · 0 comments ## Summary Ruff v0.1.0 has been released, marking a major stabilization milestone for the fast Python linter written in Rust. Key changes include a new preview mode for unstable features (replacing the old nursery concept), fix safety levels that distinguish between safe and unsafe auto-fixes (with only safe fixes applied by default), and a formal versioning policy using minor versions for breaking changes and patch versions for bug fixes. Ruff now supports over 700 lint rules and has moved its documentation to docs.astral.sh. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Ruff v0.16.0](https://daily.dev/posts/ruff-v0-16-0-by368rknj) · Astral · 23 upvotes · 0 comments --- Tags: [#python](https://daily.dev/tags/python), [#rust](https://daily.dev/tags/rust) [View this post on daily.dev](https://daily.dev/posts/ruff-v0-1-0-cvyhpul6r) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Ruff v0.1.0","url":"https://daily.dev/posts/ruff-v0-1-0-cvyhpul6r","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/ruff-v0-1-0-cvyhpul6r"},"datePublished":"2026-03-31T12:26:50.325Z","dateModified":"2026-03-31T12:31:37.166Z","description":"Ruff v0.1.0 has been released, marking a major stabilization milestone for the fast Python linter written in Rust. Key changes include a new preview mode for...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/f87cc3af50ce7f167fdf86cefc20de50?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/f87cc3af50ce7f167fdf86cefc20de50?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Astral","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Astral","logo":"https://media.daily.dev/image/upload/s--NI5d91BK--/f_auto,q_auto/v1774959974/logos/astral-sh?_a=BAMAMiWQ0","url":"https://daily.dev/sources/astral-sh"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/ruff-v0-1-0-cvyhpul6r","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"python,rust","timeRequired":"PT6M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Astral","item":"https://daily.dev/sources/astral-sh"},{"@type":"ListItem","position":3,"name":"Ruff v0.1.0"}]} ```